*   *   *   *   *

(c) Variations in alcohol content. Variations in alcohol content may not exceed 0.3 percent alcohol by volume above or below the alcohol content stated on the label.

(d) Example. Under paragraph (c) of this section, a product labeled as containing 40 percent alcohol by volume would be acceptable if the test for alcohol content found that it contained no less than 39.7 percent alcohol by volume and no more than 40.3 percent alcohol by volume.

*   *   *   *   *